21000994540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{19753}}^1$

素因数の和:19891

約数の個数: 96

約数和(自身を含む): 48386237760

約数和(自身を除く): 27385243220

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 59, 68, 85, 106, 118, 170, 212, 236, 265, 295, 340, 530, 590, 901, 1003, 1060, 1180, 1802, 2006, 3127, 3604, 4012, 4505, 5015, 6254, 9010, 10030, 12508, 15635, 18020, 19753, 20060, 31270, 39506, 53159, 62540, 79012, 98765, 106318, 197530, 212636, 265795, 335801, 395060, 531590, 671602, 1046909, 1063180, 1165427, 1343204, 1679005, 2093818, 2330854, 3358010, 4187636, 4661708, 5234545, 5827135, 6716020, 10469090, 11654270, 17797453, 19812259, 20938180, 23308540, 35594906, 39624518, 61767631, 71189812, 79249036, 88987265, 99061295, 123535262, 177974530, 198122590, 247070524, 308838155, 355949060, 396245180, 617676310, 1050049727, 1235352620, 2100099454, 4200198908, 5250248635, 10500497270, 21000994540]

約数ペア:

[(1, 21000994540), (2, 10500497270), (4, 5250248635), (5, 4200198908), (10, 2100099454), (17, 1235352620), (20, 1050049727), (34, 617676310), (53, 396245180), (59, 355949060), (68, 308838155), (85, 247070524), (106, 198122590), (118, 177974530), (170, 123535262), (212, 99061295), (236, 88987265), (265, 79249036), (295, 71189812), (340, 61767631), (530, 39624518), (590, 35594906), (901, 23308540), (1003, 20938180), (1060, 19812259), (1180, 17797453), (1802, 11654270), (2006, 10469090), (3127, 6716020), (3604, 5827135), (4012, 5234545), (4505, 4661708), (5015, 4187636), (6254, 3358010), (9010, 2330854), (10030, 2093818), (12508, 1679005), (15635, 1343204), (18020, 1165427), (19753, 1063180), (20060, 1046909), (31270, 671602), (39506, 531590), (53159, 395060), (62540, 335801), (79012, 265795), (98765, 212636), (106318, 197530)]